#ifndef __ISR_H
#define __ISR_H

#include <stdint.h>

/* Millisecond tick count incremented by SysTick_Handler */
extern volatile uint32_t keyPressEvent;
/* UART接收状态机 */
extern volatile uint8_t uart_sm;
/* UART接收缓冲区 */
extern volatile uint8_t uart_rxdat[3];
/* UART接收完成标志 */
extern volatile uint8_t UART0_flag;
#endif /* __ISR_H */
